Syncing iTunes Movie to ATV1

I have purchased a movie through iTunes and wish to sync it to my Apple TV1.
I have synced several movies before but no matter what l do I cannot get a downloaded iTunes movie to sync.
Suggestions please.

As for me, I'm used to sync iTunes drm movies and TV shows to Samsung TV and android phone.With using Tuneskit DRM Media Converter for Windows. But I really don't know how to sync iTunes movies to Apple TV. Maybe you can catch answers on Google.